Privacy Policy
Last updated: 11 April 2026
1. Introduction
Double Glazing Units ("we", "us", "our") is committed to protecting and respecting your privacy. This Privacy Policy explains how we collect, use, store, and protect your personal data when you visit our website (doubleglazingunits.co.uk) or engage with our services.
This policy is compliant with the UK General Data Protection Regulation (UK GDPR), the Data Protection Act 2018, and the Privacy and Electronic Communications Regulations (PECR).
2. Data Controller
The data controller responsible for your personal data is:
- Company: Double Glazing Units
- Email: [email protected]
- Telephone: 020 8058 4360
- Address: London, United Kingdom
- ICO Registration Reference: ZA123456 (example — to be updated)
3. What Personal Data We Collect
We may collect the following personal data from you:
- Identity data: full name
- Contact data: email address, telephone number, postal address
- Enquiry data: details of your enquiry submitted via our contact forms, including property type, project requirements, and preferred contact method
- Technical data: IP address, browser type and version, operating system, time zone setting, device type, pages visited, and how you arrived at our website
- Usage data: information about how you use our website, including pages viewed, time spent on pages, and click patterns
- Cookie data: see our Cookie Policy for full details
4. How We Collect Your Data
We collect personal data through:
- Contact forms: when you submit an enquiry, request a quote, or register for a trade account
- Email and telephone: when you contact us directly
- Website analytics: through cookies and similar technologies (with your consent)
- Third-party sources: we may receive data from Google Analytics and similar analytics providers
5. Lawful Basis for Processing
We process your personal data under the following lawful bases:
- Consent: where you have given clear consent for us to process your data for specific purposes (e.g. analytics cookies, marketing communications)
- Legitimate interests: where processing is necessary for our legitimate business interests, such as responding to enquiries, improving our services, and managing our business operations
- Contractual necessity: where processing is necessary to perform a contract with you or to take steps at your request prior to entering a contract (e.g. providing a quotation)
- Legal obligation: where processing is necessary to comply with a legal obligation (e.g. maintaining financial records)
6. How We Use Your Data
We use your personal data to:
- Respond to your enquiries and provide quotations
- Process and fulfil orders for double glazing sealed units
- Arrange installation appointments
- Communicate with you about your order or enquiry
- Send you marketing communications (only with your explicit consent)
- Improve our website, products, and services
- Analyse website usage through Google Analytics (with your consent)
- Comply with legal and regulatory obligations
- Detect and prevent fraud
7. Data Sharing
We do not sell, rent, or trade your personal data. We may share your data with:
- Service providers: trusted third parties who assist us in operating our business, such as website hosting providers, email service providers, and payment processors — all bound by contractual confidentiality obligations
- Analytics providers: Google Analytics (data is anonymised where possible)
- Installation partners: where necessary to fulfil your order in your area
- Legal authorities: if required by law, regulation, or legal proceedings
8. Data Retention
We retain your personal data only for as long as necessary to fulfil the purposes for which it was collected:
- Enquiry data: retained for up to 24 months after your last contact with us
- Customer/order data: retained for 7 years to comply with HMRC requirements
- Analytics data: retained for 26 months (Google Analytics default)
- Marketing consent records: retained for as long as you remain subscribed
After the retention period expires, your data is securely deleted or anonymised.
9. Your Rights Under UK GDPR
You have the following rights regarding your personal data:
- Right of access: request a copy of the personal data we hold about you
- Right to rectification: request correction of inaccurate or incomplete data
- Right to erasure ("right to be forgotten"): request deletion of your personal data where there is no compelling reason for continued processing
- Right to restrict processing: request that we limit how we use your data
- Right to data portability: request transfer of your data to another organisation in a structured, commonly used, machine-readable format
- Right to object: object to processing based on legitimate interests or for direct marketing purposes
- Right to withdraw consent: withdraw your consent at any time where processing is based on consent
To exercise any of these rights, please contact us at [email protected]. We will respond within one month of receiving your request, as required by the UK GDPR.
10. Data Security
We take appropriate technical and organisational measures to protect your personal data against unauthorised access, loss, destruction, or alteration. These measures include:
- SSL/TLS encryption on our website
- Secure hosting with UK-based or EEA-compliant servers
- Regular security reviews and updates
- Access controls limiting who can access personal data
- Secure disposal of data when no longer needed
11. International Data Transfers
Your personal data is primarily processed and stored within the United Kingdom and the European Economic Area (EEA). Where data is transferred outside the UK or EEA (for example, Google Analytics servers), we ensure appropriate safeguards are in place, such as Standard Contractual Clauses or adequacy decisions recognised by the UK Government.
12. Children's Data
Our website and services are not directed at individuals under 18 years of age. We do not knowingly collect personal data from children. If you believe we have inadvertently collected data from a minor, please contact us immediately so we can delete it.
13. Third-Party Links
Our website may contain links to third-party websites (e.g. social media profiles, industry body websites). We are not responsible for the privacy practices of these external sites. We encourage you to read their privacy policies before providing any personal data.
14. Complaints
If you are unhappy with how we have handled your personal data, you have the right to lodge a complaint with the Information Commissioner's Office (ICO):
- Website: ico.org.uk
- Telephone: 0303 123 1113
- Address: Information Commissioner's Office, Wycliffe House, Water Lane, Wilmslow, Cheshire, SK9 5AF
We would appreciate the opportunity to resolve your concerns before you contact the ICO. Please contact us at [email protected] first.
15. Changes to This Policy
We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or other factors. We will post the updated version on this page with a revised "Last updated" date. We encourage you to review this policy periodically.
16. Contact Us
If you have any questions about this Privacy Policy or our data practices, please contact us:
- Email: [email protected]
- Telephone: 020 8058 4360
- Post: Double Glazing Units, London, United Kingdom
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